You have been infected with the H1N1 flu virus. Describe how this virus might have entered your body, how it works to make you sick, and what happens when you finally get better. List at least 7 different steps.

a chair, a bed, and a toothbrush

explanation:

i was told this before by a teacher, so yeah

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

i think the answer is b.

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.